$DTE
DTE ENERGY CO Stock $dte

$dte Overview Financials Valuation SEC Filings Company Website

2011 Q3 Form 10-Q Financial Statement

#000093634011000005 Filed on November 04, 2011

Income Statement

Concept	2011 Q3	2010 Q3
Revenue	$2.254B	$2.139B
YoY Change	5.38%	9.69%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$259.0M	$271.0M
YoY Change	-4.43%	1.88%
% of Gross Profit
Operating Expenses	$1.847B	$1.752B
YoY Change	5.42%	8.28%
Operating Profit	$398.0M	$386.0M
YoY Change	3.11%
Interest Expense	$120.0M	$142.0M
YoY Change	-15.49%	-207.58%
% of Operating Profit	30.15%	36.79%
Other Income/Expense, Net	-$113.0M	-$128.0M
YoY Change	-11.72%	-740.0%
Pretax Income	$286.0M	$258.0M
YoY Change	10.85%	17.27%
Income Tax	$101.0M	$92.00M
% Of Pretax Income	35.31%	35.66%
Net Earnings	$183.0M	$163.0M
YoY Change	12.27%	7.95%
Net Earnings / Revenue	8.12%	7.62%
Basic Earnings Per Share	$1.08	$0.97
Diluted Earnings Per Share	$1.07	$0.96
COMMON SHARES
Basic Shares Outstanding	169.0M shares	169.0M shares
Diluted Shares Outstanding	170.0M shares	170.0M shares

Balance Sheet

Concept	2011 Q3	2010 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$46.00M	$84.00M
YoY Change	-45.24%	1.2%
Cash & Equivalents	$46.00M	$84.00M
Short-Term Investments
Other Short-Term Assets	$249.0M	$688.0M
YoY Change	-63.81%	-10.53%
Inventory	$776.0M	$732.0M
Prepaid Expenses
Receivables	$1.206B	$1.140B
Other Receivables	$121.0M	$97.00M
Total Short-Term Assets	$2.911B	$2.741B
YoY Change	6.2%	3.28%
LONG-TERM ASSETS
Property, Plant & Equipment	$13.42B	$12.82B
YoY Change	4.68%	3.44%
Goodwill	$2.020B
YoY Change
Intangibles	$74.00M
YoY Change
Long-Term Investments	$1.479B	$1.465B
YoY Change	0.96%	-7.51%
Other Assets	$192.0M	$5.026B
YoY Change	-96.18%	-1.8%
Total Long-Term Assets	$7.027B	$21.53B
YoY Change	-67.35%	1.03%
TOTAL ASSETS
Total Short-Term Assets	$2.911B	$2.741B
Total Long-Term Assets	$7.027B	$21.53B
Total Assets	$24.78B	$24.27B
YoY Change	2.12%	1.28%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$708.0M	$641.0M
YoY Change	10.45%	10.9%
Accrued Expenses	$121.0M	$135.0M
YoY Change	-10.37%	-9.4%
Deferred Revenue
YoY Change
Short-Term Debt	$275.0M	$20.00M
YoY Change	1275.0%	-90.24%
Long-Term Debt Due	$247.0M	$923.0M
YoY Change	-73.24%	442.94%
Total Short-Term Liabilities	$2.100B	$2.513B
YoY Change	-16.43%	27.18%
LONG-TERM LIABILITIES
Long-Term Debt	$6.702B	$7.074B
YoY Change	-5.26%	-10.16%
Other Long-Term Liabilities	$258.0M	$5.683B
YoY Change	-95.46%	-1.1%
Total Long-Term Liabilities	$8.174B	$12.76B
YoY Change	-35.93%	-6.34%
TOTAL LIABILITIES
Total Short-Term Liabilities	$2.100B	$2.513B
Total Long-Term Liabilities	$8.174B	$12.76B
Total Liabilities	$10.27B	$17.62B
YoY Change	-41.69%	-0.58%
SHAREHOLDERS EQUITY
Retained Earnings	$3.698B
YoY Change
Common Stock	$3.418B
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$6.970B	$6.646B
YoY Change
Total Liabilities & Shareholders Equity	$24.78B	$24.27B
YoY Change	2.12%	1.28%

Cashflow Statement

Concept	2011 Q3	2010 Q3
OPERATING ACTIVITIES
Net Income	$183.0M	$163.0M
YoY Change	12.27%	7.95%
Depreciation, Depletion And Amortization	$259.0M	$271.0M
YoY Change	-4.43%	1.88%
Cash From Operating Activities	$327.0M	$358.0M
YoY Change	-8.66%	-4.02%
INVESTING ACTIVITIES
Capital Expenditures	-$310.0M	-$303.0M
YoY Change	2.31%	47.09%
Acquisitions
YoY Change
Other Investing Activities	$25.00M	-$39.00M
YoY Change	-164.1%	-285.71%
Cash From Investing Activities	-$285.0M	-$342.0M
YoY Change	-16.67%	84.86%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-57.00M	-56.00M
YoY Change	1.79%	-61.9%
NET CHANGE
Cash From Operating Activities	327.0M	358.0M
Cash From Investing Activities	-285.0M	-342.0M
Cash From Financing Activities	-57.00M	-56.00M
Net Change In Cash	-15.00M	-40.00M
YoY Change	-62.5%	-197.56%
FREE CASH FLOW
Cash From Operating Activities	$327.0M	$358.0M
Capital Expenditures	-$310.0M	-$303.0M
Free Cash Flow	$637.0M	$661.0M
YoY Change	-3.63%	14.16%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2010Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	729000000	USD
CY2011Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1206000000	USD
CY2010Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1393000000	USD
CY2010Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	75000000	USD
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CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-149000000	USD
CY2011Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-146000000	USD
CY2011Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	13000000	USD
CY2010Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9000000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	38000000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	42000000	USD
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CY2010Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	196000000	USD
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	400000	shares
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	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	3000000	USD
	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	-15000000	USD
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	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	-1000000	USD
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	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	-26000000	USD
	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	-25000000	USD
CY2010Q3	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	-6000000	USD
CY2011Q3	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	-9000000	USD
CY2010Q4	us-gaap	Available For Sale Securities Noncurrent AvailableForSaleSecuritiesNoncurrent	6000000	USD
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	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	32000000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-19000000	USD
CY2011Q3	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	66000000	USD
CY2011Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2010Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
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CY2010Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0.00
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CY2011Q3	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1000000	USD
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CY2011Q2	us-gaap	Extinguishment Of Debt Amount ExtinguishmentOfDebtAmount	991000000	USD
	us-gaap	Fair Value Level1 To Level2 Transfers Amount FairValueLevel1ToLevel2TransfersAmount	0	USD
CY2011Q3	us-gaap	Fair Value Level1 To Level2 Transfers Amount FairValueLevel1ToLevel2TransfersAmount	0	USD
CY2010Q3	us-gaap	Fair Value Level1 To Level2 Transfers Amount FairValueLevel1ToLevel2TransfersAmount	0	USD
	us-gaap	Fair Value Level1 To Level2 Transfers Amount FairValueLevel1ToLevel2TransfersAmount	0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	39000000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	29000000	USD
CY2010Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	25000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	122000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Period Increase Decrease FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPeriodIncreaseDecrease	24000000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Period Increase Decrease FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPeriodIncreaseDecrease	11000000	USD
CY2010Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Period Increase Decrease FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPeriodIncreaseDecrease	-1000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Period Increase Decrease FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPeriodIncreaseDecrease	57000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	1000000	USD
CY2010Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Sales Issuances Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements	-31000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases Sales Issuances Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements	-69000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	-65000000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Settlements FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements	-36000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	-4000000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	-7000000	USD
CY2010Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	-22000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Net FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersNet	52000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	-24000000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	-42000000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	9000000	USD
CY2010Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	22000000	USD
CY2011Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	26000000	USD
CY2011Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	65000000	USD
CY2010Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	63000000	USD
	us-gaap	Finite Lived Intangible Assets Useful Life Maximum FiniteLivedIntangibleAssetsUsefulLifeMaximum	30
	us-gaap	Finite Lived Intangible Assets Useful Life Minimum FiniteLivedIntangibleAssetsUsefulLifeMinimum	4
CY2011Q3	us-gaap	Goodwill Goodwill	2020000000	USD
CY2010Q4	us-gaap	Goodwill Goodwill	2020000000	USD
CY2010Q3	us-gaap	Interest Expense InterestExpense	142000000	USD
CY2010Q4	us-gaap	Interest Payable Current InterestPayableCurrent	111000000	USD
CY2011Q3	us-gaap	Interest Payable Current InterestPayableCurrent	121000000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	286000000	USD
CY2010Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	258000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	735000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	743000000	USD
CY2011Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	101000000	USD
CY2010Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	92000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	252000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	180000000	USD
CY2011Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	88000000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-34000000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-14000000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-181000000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-357000000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	267000000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	19000000	USD
	us-gaap	Increase Decrease In Commodity Contract Assets And Liabilities IncreaseDecreaseInCommodityContractAssetsAndLiabilities	36000000	USD
	us-gaap	Increase Decrease In Commodity Contract Assets And Liabilities IncreaseDecreaseInCommodityContractAssetsAndLiabilities	58000000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	200000000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	115000000	USD
	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	-73000000	USD
	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	-48000000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	11000000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-67000000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	59000000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-37000000	USD
	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	20000000	USD
	us-gaap	Increase Decrease In Postretirement Obligations IncreaseDecreaseInPostretirementObligations	-59000000	USD
	us-gaap	Increase Decrease In Prepaid Pension Costs IncreaseDecreaseInPrepaidPensionCosts	99000000	USD
	us-gaap	Increase Decrease In Prepaid Pension Costs IncreaseDecreaseInPrepaidPensionCosts	186000000	USD
	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-47000000	USD
	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-33000000	USD
CY2010Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2011Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1000000	shares
CY2011Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	74000000	USD
CY2010Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	67000000	USD
	us-gaap	Interest Expense InterestExpense	418000000	USD
	us-gaap	Interest Expense InterestExpense	370000000	USD
CY2011Q3	us-gaap	Interest Expense InterestExpense	120000000	USD
CY2011Q4	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	1000000	USD
	us-gaap	Line Of Credit Facility Increase Additional Borrowings LineOfCreditFacilityIncreaseAdditionalBorrowings	15000000	USD
CY2011Q3	us-gaap	Inventory Raw Materials InventoryRawMaterials	567000000	USD
CY2010Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	460000000	USD
CY2011Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	3000000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	9000000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	8000000	USD
CY2010Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	3000000	USD
CY2011Q3	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	104000000	USD
CY2010Q4	us-gaap	Investments Fair Value Disclosure InvestmentsFairValueDisclosure	111000000	USD
CY2011Q3	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	38000000	USD
CY2010Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	24896000000	USD
CY2011Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	24780000000	USD
CY2011Q3	us-gaap	Liabilities Current LiabilitiesCurrent	2100000000	USD
CY2010Q4	us-gaap	Liabilities Current LiabilitiesCurrent	2749000000	USD
CY2010Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	8291000000	USD
CY2011Q3	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	8174000000	USD
CY2011Q3	us-gaap	Line Of Credit Facility Amount Outstanding LineOfCreditFacilityAmountOutstanding	-419000000	USD
CY2011Q3	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	1975000000	USD
CY2011Q3	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	1556000000	USD
CY2011Q3	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	-144000000	USD
CY2011Q3	us-gaap	Long Term Commercial Paper Current LongTermCommercialPaperCurrent	-275000000	USD
CY2011Q3	us-gaap	Long Term Debt LongTermDebt	7700000000	USD
CY2010Q4	us-gaap	Long Term Debt LongTermDebt	8000000000.0	USD
CY2010Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	7089000000	USD
CY2011Q3	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	7497000000	USD
CY2010Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	925000000	USD
CY2011Q3	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	247000000	USD
CY2011Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	6702000000	USD
CY2010Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	6114000000	USD
CY2011Q3	us-gaap	Long Term Investments LongTermInvestments	1420000000	USD
CY2010Q4	us-gaap	Long Term Investments LongTermInvestments	1457000000	USD
	us-gaap	Long Term Purchase Commitment Amount LongTermPurchaseCommitmentAmount	5000000000	USD
CY2010Q4	us-gaap	Long Term Transition Bond LongTermTransitionBond	643000000	USD
CY2011Q3	us-gaap	Long Term Transition Bond LongTermTransitionBond	479000000	USD
CY2011Q3	us-gaap	Loss Contingency Estimate Of Possible Loss LossContingencyEstimateOfPossibleLoss	400000000	USD
CY2011Q3	us-gaap	Minority Interest MinorityInterest	39000000	USD
CY2010Q4	us-gaap	Minority Interest MinorityInterest	45000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-453000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-643000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-834000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1052000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1486000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1509000000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	183000000	USD
CY2011Q3	us-gaap	Other Assets Current OtherAssetsCurrent	249000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	561000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	478000000	USD
CY2010Q3	us-gaap	Net Income Loss NetIncomeLoss	163000000	USD
CY2010Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	3000000	USD
CY2011Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2000000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2000000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	5000000	USD
CY2011Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-113000000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-379000000	USD
CY2010Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-128000000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-334000000	USD
CY2011Q3	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	124000000	USD
CY2010Q4	us-gaap	Notes And Loans Receivable Net Noncurrent NotesAndLoansReceivableNetNoncurrent	123000000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	1114000000	USD
CY2011Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	399000000	USD
CY2010Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	386000000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	1077000000	USD
CY2010Q4	us-gaap	Other Assets Current OtherAssetsCurrent	197000000	USD
CY2011Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	192000000	USD
CY2010Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	206000000	USD
	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	-1000000	USD
	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	-21000000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	5000000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	16000000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax OtherComprehensiveIncomeDefinedBenefitPlansTax	2000000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax OtherComprehensiveIncomeDefinedBenefitPlansTax	3000000	USD
	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	0	USD
	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	2000000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	0	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	-1000000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax	0	USD
	us-gaap	Other Comprehensive Income Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax	0	USD
	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	1000000	USD
	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeTax	1000000	USD
	us-gaap	Other Comprehensive Income Reclassification Adjustment On Derivatives Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentOnDerivativesIncludedInNetIncomeTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	1000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-11000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-1000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-6000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	0	USD
CY2010Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1000000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	0	USD
CY2011Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	-8000000	USD
CY2011Q3	us-gaap	Other Income OtherIncome	20000000	USD
	us-gaap	Other Income OtherIncome	59000000	USD
	us-gaap	Other Income OtherIncome	62000000	USD
CY2010Q3	us-gaap	Other Income OtherIncome	20000000	USD
CY2011Q3	us-gaap	Other Inventory Supplies OtherInventorySupplies	209000000	USD
CY2010Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	202000000	USD
CY2010Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	597000000	USD
CY2011Q3	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	536000000	USD
CY2010Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	275000000	USD
CY2011Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	258000000	USD
CY2011Q3	us-gaap	Other Long Term Debt Noncurrent OtherLongTermDebtNoncurrent	289000000	USD
CY2010Q4	us-gaap	Other Long Term Debt Noncurrent OtherLongTermDebtNoncurrent	289000000	USD
CY2010Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	518000000	USD
CY2011Q3	us-gaap	Other Long Term Investments OtherLongTermInvestments	527000000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-5000000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	0	USD
CY2011Q3	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	16000000	USD
CY2010Q3	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	9000000	USD
	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	31000000	USD
	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	32000000	USD
CY2011Q1	us-gaap	Other Postretirement Benefits Payments OtherPostretirementBenefitsPayments	81000000	USD
CY2011Q3	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	1216000000	USD
CY2010Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	1275000000	USD
CY2010Q4	us-gaap	Other Receivables OtherReceivables	402000000	USD
CY2011Q3	us-gaap	Other Receivables OtherReceivables	121000000	USD
CY2010Q4	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	39000000	USD
CY2011Q3	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	4000000	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	0	USD
CY2010Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	0	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	0	USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	0	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	55000000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	22000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	18000000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	265000000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	289000000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	204000000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	97000000	USD
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	49000000	USD
	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	26000000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	595000000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	908000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-32000000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-19000000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	-307000000	USD
	us-gaap	Proceeds From Repayments Of Short Term Debt ProceedsFromRepaymentsOfShortTermDebt	126000000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	69000000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	179000000	USD
CY2011Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	10000000	USD
CY2010Q3	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	51000000	USD
	us-gaap	Proceeds From Sale Of Other Productive Assets ProceedsFromSaleOfOtherProductiveAssets	13000000	USD
	us-gaap	Proceeds From Sale Of Other Productive Assets ProceedsFromSaleOfOtherProductiveAssets	28000000	USD
	us-gaap	Profit Loss ProfitLoss	563000000	USD
CY2011Q3	us-gaap	Profit Loss ProfitLoss	185000000	USD
CY2010Q3	us-gaap	Profit Loss ProfitLoss	166000000	USD
	us-gaap	Profit Loss ProfitLoss	483000000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	21574000000	USD
CY2011Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	22312000000	USD
CY2011Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	13422000000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	12992000000	USD
CY2011Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	201000000	USD
CY2010Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	58000000	USD
CY2011Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	3940000000	USD
CY2010Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	4058000000	USD
CY2011Q3	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	1040000000	USD
CY2010Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	1328000000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	660000000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1161000000	USD
CY2011Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	73000000	USD
CY2010Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	120000000	USD
CY2010Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3431000000	USD
CY2011Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3698000000	USD
	us-gaap	Revenues From Transactions With Other Operating Segments Of Same Entity RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity	163000000	USD
CY2011Q3	us-gaap	Revenues From Transactions With Other Operating Segments Of Same Entity RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity	44000000	USD
	us-gaap	Revenues From Transactions With Other Operating Segments Of Same Entity RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity	167000000	USD
CY2010Q3	us-gaap	Revenues From Transactions With Other Operating Segments Of Same Entity RevenuesFromTransactionsWithOtherOperatingSegmentsOfSameEntity	63000000	USD
CY2010Q4	us-gaap	Securitized Regulatory Transition Assets Noncurrent SecuritizedRegulatoryTransitionAssetsNoncurrent	729000000	USD
CY2011Q3	us-gaap	Securitized Regulatory Transition Assets Noncurrent SecuritizedRegulatoryTransitionAssetsNoncurrent	618000000	USD
CY2010Q3	us-gaap	Segment Reporting Information Revenue SegmentReportingInformationRevenue	2139000000	USD
	us-gaap	Segment Reporting Information Revenue SegmentReportingInformationRevenue	6724000000	USD
	us-gaap	Segment Reporting Information Revenue SegmentReportingInformationRevenue	6384000000	USD
CY2011Q3	us-gaap	Segment Reporting Information Revenue SegmentReportingInformationRevenue	2265000000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	-66357	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	611844	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	47.98
CY2011Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	2597318	shares
CY2011Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	42.30
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Remaining Contractual Term ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm	4.42
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	14000000	USD
CY2011Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	40.52
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	-21963	shares
CY2011Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	43.41
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2011Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0.00
CY2011Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	26000000	USD
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4827457	shares
CY2011Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	3263804	shares
CY2011Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	41.34
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	41.09
CY2011Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber	687061	shares
CY2011Q3	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	18000000	USD
CY2010Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	150000000	USD
CY2011Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	275000000	USD
CY2011Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	49000000	USD
	us-gaap	Stock Issued1 StockIssued1	147000000	USD
	us-gaap	Stock Issued1 StockIssued1	1000000	USD
	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	15000000	USD
	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	3000000	USD
	us-gaap	Stock Option Plan Expense StockOptionPlanExpense	1000000	USD
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	-45000000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	6722000000	USD
CY2011Q3	us-gaap	Stockholders Equity StockholdersEquity	6970000000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6767000000	USD
CY2011Q3	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7009000000	USD
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	231000000	USD
CY2010Q3	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	69000000	USD
CY2011Q3	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	79000000	USD
	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	239000000	USD
	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	3000000	USD
	us-gaap	Trading Securities Unrealized Holding Gain Loss TradingSecuritiesUnrealizedHoldingGainLoss	-3000000	USD
CY2010Q3	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	0.40	USD
	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	1.22	USD
	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	1.56	USD
CY2011Q3	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	0.48	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	5000000	USD
CY2011Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4000000	USD
	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	40000000	USD
	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	1948000000	USD
	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	1898000000	USD
CY2011Q3	dte	Cash Collateral Paid Or Received For Derivative Liabilities CashCollateralPaidOrReceivedForDerivativeLiabilities	3000000	USD
CY2011Q3	dte	Cash Collateral Received CashCollateralReceived	1000000	USD
CY2010Q3	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	649000000	USD
CY2011Q3	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	670000000	USD
CY2010Q3	us-gaap	Utility Revenue UtilityRevenue	2139000000	USD
	dte	Amounts Reclassified To Benefit Obligations Related To Consolidation Of Variable Interest Entities Tax AmountsReclassifiedToBenefitObligationsRelatedToConsolidationOfVariableInterestEntitiesTax	0	USD
	dte	Amounts Reclassified To Benefit Obligations Related To Consolidation Of Variable Interest Entities Tax AmountsReclassifiedToBenefitObligationsRelatedToConsolidationOfVariableInterestEntitiesTax	5000000	USD
	us-gaap	Utility Revenue UtilityRevenue	6384000000	USD
CY2011Q3	us-gaap	Utility Revenue UtilityRevenue	2265000000	USD
	us-gaap	Utility Revenue UtilityRevenue	6724000000	USD
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	168000000	shares
CY2011Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	170000000	shares
CY2010Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	170000000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	170000000	shares
CY2010Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	169000000	shares
CY2011Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	169000000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	169000000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	168000000	shares
CY2010Q3	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	1000000	shares
	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	1000000	shares
CY2011Q3	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	1000000	shares
	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	1000000	shares
	dte	Aggregate Limit Of Liabilities Arises From Terroist Act Outside Scope Of Trials Subject To One Industry AggregateLimitOfLiabilitiesArisesFromTerroistActOutsideScopeOfTrialsSubjectToOneIndustry	300000000	USD
	dte	Amount Of Credit To Cim Regulatory Asset AmountOfCreditToCimRegulatoryAsset	31000000	USD
	dte	Amount Per Event Loss Associated With Nuclear Power Plants AmountPerEventLossAssociatedWithNuclearPowerPlants	29000000	USD
	dte	Amounts Reclassified To Benefit Obligations Related To Consolidation Of Variable Interest Entities AmountsReclassifiedToBenefitObligationsRelatedToConsolidationOfVariableInterestEntities	0	USD
	dte	Amounts Reclassified To Benefit Obligations Related To Consolidation Of Variable Interest Entities AmountsReclassifiedToBenefitObligationsRelatedToConsolidationOfVariableInterestEntities	10000000	USD
	dte	Amounts Reclassified To Benefit Obligations Related To Consolidation Of Variable Interest Entities1 AmountsReclassifiedToBenefitObligationsRelatedToConsolidationOfVariableInterestEntities1	-10000000	USD
	dte	Amounts Reclassified To Benefit Obligations Related To Consolidation Of Variable Interest Entities1 AmountsReclassifiedToBenefitObligationsRelatedToConsolidationOfVariableInterestEntities1	0	USD
	dte	Amounts Reclassified To Benefit Obligations Related To Consolidation Of Variable Interest Entities Tax1 AmountsReclassifiedToBenefitObligationsRelatedToConsolidationOfVariableInterestEntitiesTax1	0	USD
	dte	Amounts Reclassified To Benefit Obligations Related To Consolidation Of Variable Interest Entities Tax1 AmountsReclassifiedToBenefitObligationsRelatedToConsolidationOfVariableInterestEntitiesTax1	-5000000	USD
	dte	Annual Revenue Decoupling Mechanism Collar On Surcharge And Refund Year1 AnnualRevenueDecouplingMechanismCollarOnSurchargeAndRefundYear1	0.015	percent
	dte	Annual Revenue Decoupling Mechanism Collar On Surcharge And Refund Year2 And Subsequent Years AnnualRevenueDecouplingMechanismCollarOnSurchargeAndRefundYear2AndSubsequentYears	0.03	percent
CY2010Q4	dte	Average Maturity Of Debt Securities AverageMaturityOfDebtSecurities	6	years
CY2011Q3	dte	Average Maturity Of Debt Securities AverageMaturityOfDebtSecurities	7	years
	dte	Benefit Obligations Net Of Tax BenefitObligationsNetOfTax	5000000	USD
	dte	Benefit Obligations Net Of Tax BenefitObligationsNetOfTax	6000000	USD
CY2011Q3	dte	Borrowing Capacity Under Financing Agreement With Its Clearing Agent BorrowingCapacityUnderFinancingAgreementWithItsClearingAgent	100000000	USD
	dte	Capital Expenditures Over Next Few Years CapitalExpendituresOverNextFewYears	13000000	USD
CY2011Q3	dte	Cash Collateral Paid CashCollateralPaid	64000000	USD
	dte	Combined Coverage Limit For Total Property Damage CombinedCoverageLimitForTotalPropertyDamage	2750000000	USD
	dte	Company Obligated To Pay Doe Fee Of Fermi2 Electricity Generated And Sold CompanyObligatedToPayDoeFeeOfFermi2ElectricityGeneratedAndSold	1	kWh
CY2011Q2	dte	Consistnet With Orginal Treatment Of Deferred Tax Liabilities No Cash Flow Impact ConsistnetWithOrginalTreatmentOfDeferredTaxLiabilitiesNoCashFlowImpact	0	USD
	dte	Consolidation Of Vies ConsolidationOfVies	0	USD
	dte	Consolidation Of Vies ConsolidationOfVies	19000000	USD
	dte	Coverage For Stabilization Decontamination Debris Removal Repair And Replacement Of Property And Decommissioning CoverageForStabilizationDecontaminationDebrisRemovalRepairAndReplacementOfPropertyAndDecommissioning	2250000000	USD
CY2011Q2	dte	Decrease In Deferred Tax Liabilities Attributaable To Regulated Utilities DecreaseInDeferredTaxLiabilitiesAttributaableToRegulatedUtilities	395000000	USD
	dte	Deferred Premium Charged Leviied Against Each Licensed Nuclear Facility DeferredPremiumChargedLeviiedAgainstEachLicensedNuclearFacility	117500000	USD
CY2010Q2	dte	Deferred Tax Liabilities Attributable To Regulated Utilities DeferredTaxLiabilitiesAttributableToRegulatedUtilities	41000000	USD
	dte	Possible Environmental Capital Expenditures To Comply With Requirements PossibleEnvironmentalCapitalExpendituresToComplyWithRequirements	1500000	USD
	dte	Dividends Declared Common Shares DividendsDeclaredCommonShares	271000000	USD
	dte	Dividends Declared Common Shares DividendsDeclaredCommonShares	293000000	USD
CY2011Q3	dte	Dividends Declared Common Shares DividendsDeclaredCommonShares	99000000	USD
	dte	Environmental Capital Expenditures In Current Year EnvironmentalCapitalExpendituresInCurrentYear	200000000	USD
	dte	Environmental Capital Expenditures In Future Years EnvironmentalCapitalExpendituresInFutureYears	2000000000	USD
CY2011Q3	dte	Derivative Instruments Recoverable Through Pscr Mechanism DerivativeInstrumentsRecoverableThroughPscrMechanism	0	USD
	dte	Derivative Instruments Recoverable Through Pscr Mechanism DerivativeInstrumentsRecoverableThroughPscrMechanism	3000000	USD
	dte	Environmental Capital Expenditures Through Prior Year EnvironmentalCapitalExpendituresThroughPriorYear	1500000000	USD
	dte	Eps Net Income Less Distributed Earnings EpsNetIncomeLessDistributedEarnings	206000000	USD
	dte	Eps Net Income Less Distributed Earnings EpsNetIncomeLessDistributedEarnings	267000000	USD
CY2010Q3	dte	Eps Net Income Less Distributed Earnings EpsNetIncomeLessDistributedEarnings	68000000	USD
CY2011Q3	dte	Eps Net Income Less Distributed Earnings EpsNetIncomeLessDistributedEarnings	84000000	USD
	dte	Estimated Future Capital Expenditures For Current Year EstimatedFutureCapitalExpendituresForCurrentYear	1700000000	USD
CY2010Q3	dte	Dividends Declared Common Shares DividendsDeclaredCommonShares	94000000	USD
	dte	Expected Permanent Capital Structure Debt Percent ExpectedPermanentCapitalStructureDebtPercent	0.508	percent
	dte	Expected Permanent Capital Structure Equity Percent ExpectedPermanentCapitalStructureEquityPercent	0.492	percent
	dte	Fair Value Measurements With Unobservable Inputs Reconciliation Gains And Loses Recorded In Regulatory Assets Liabilities FairValueMeasurementsWithUnobservableInputsReconciliationGainsAndLosesRecordedInRegulatoryAssetsLiabilities	3000000	USD
	dte	Fair Value Measurements With Unobservable Inputs Reconciliation Gains And Loses Recorded In Regulatory Assets Liabilities FairValueMeasurementsWithUnobservableInputsReconciliationGainsAndLosesRecordedInRegulatoryAssetsLiabilities	4000000	USD
	dte	Gas Cost Recovery Cos Of Gas Sold Two And One Years Prior GasCostRecoveryCosOfGasSoldTwoAndOneYearsPrior	1000000000	USD
	dte	Gas Cost Recovery Cost Of Cost Of Gas Sold One Year Prior And Current Year GasCostRecoveryCostOfCostOfGasSoldOneYearPriorAndCurrentYear	700000000	USD
	dte	Gas Main Renewal Program Capital Expenditures GasMainRenewalProgramCapitalExpenditures	17000000	USD
	dte	Gas Main Renewal Program Implentation Time Period GasMainRenewalProgramImplentationTimePeriod	10	years
	dte	Gas Meter Move Out Program Capital Expenditures GasMeterMoveOutProgramCapitalExpenditures	22000000	USD
	dte	Gas Meter Move Out Program Implementation Time Period GasMeterMoveOutProgramImplementationTimePeriod	10	years
	dte	Gcr Plan Case Factory Current Year And Next Year GcrPlanCaseFactoryCurrentYearAndNextYear	5.89	MCF
CY2011Q3	dte	Guarantee Obligations Maximum Exposure One GuaranteeObligationsMaximumExposureOne	10000000	USD
	dte	Insurance Coverage For Extra Expensewhen To Necessitate Power Plant When Unavailable InsuranceCoverageForExtraExpensewhenToNecessitatePowerPlantWhenUnavailable	490000000	USD
CY2011Q3	dte	Intangible Assets Emission Allowance IntangibleAssetsEmissionAllowance	9000000	USD
CY2010Q4	dte	Intangible Assets Emission Allowance IntangibleAssetsEmissionAllowance	9000000	USD
CY2010Q4	dte	Intangible Assets Renewable Energy Credits IntangibleAssetsRenewableEnergyCredits	17000000	USD
CY2011Q3	dte	Intangible Assets Renewable Energy Credits IntangibleAssetsRenewableEnergyCredits	26000000	USD
CY2010Q4	dte	Liabilities From Transportation And Storage Contracts LiabilitiesFromTransportationAndStorageContracts	83000000	USD
CY2011Q3	dte	Liabilities From Transportation And Storage Contracts LiabilitiesFromTransportationAndStorageContracts	73000000	USD
	dte	Limit Deferred Premium Charges Per Year LimitDeferredPremiumChargesPerYear	17500000	USD
CY2011Q2	dte	Interest Rate Is Reset Every Three Months InterestRateIsResetEveryThreeMonths	3
	dte	Maintenance Of Public Liability Insurance For Nuclear Power Plants MaintenanceOfPublicLiabilityInsuranceForNuclearPowerPlants	375000000	USD
CY2011Q3	dte	Maximum Additional Margin Financing MaximumAdditionalMarginFinancing	50000000	USD
CY2011Q3	dte	Line Of Credit Facility Current Borrowing LineOfCreditFacilityCurrentBorrowing	115000000	USD
CY2011Q1	dte	Mpsc Authorized Recovery Of Uncollectibe Expense MpscAuthorizedRecoveryOfUncollectibeExpense	31000000	USD
	dte	Mpsc Authorized Refund To Customer Bills MpscAuthorizedRefundToCustomerBills	7000000	USD
	dte	Mpsc Authorized Surcharges To Recover Restoration Expenses MpscAuthorizedSurchargesToRecoverRestorationExpenses	19500000	USD
	dte	Neil Policies Against Terroism Loss NeilPoliciesAgainstTerroismLoss	3200000000	USD
	dte	Maximum Amount Of Years To Incur Additional Capital Expenditures MaximumAmountOfYearsToIncurAdditionalCapitalExpenditures	6	years
CY2011Q3	dte	Maximum Percentage Of Commitment To Bank In Any Facility MaximumPercentageOfCommitmentToBankInAnyFacility	0.0825
CY2011Q3	dte	Maximum Total Funded Debt To Total Capitalization Ratio MaximumTotalFundedDebtToTotalCapitalizationRatio	0.65	ratio
CY2011Q3	dte	Maximum Total Funded Debt To Total Capitilization Ration Denominator MaximumTotalFundedDebtToTotalCapitilizationRationDenominator	1.00	ratio
CY2011Q2	dte	Michigan Corporate Income Tax MichiganCorporateIncomeTax	0.06
	dte	Minimum Amount Of Years To Incur Additional Capital Expenditures MinimumAmountOfYearsToIncurAdditionalCapitalExpenditures	4	years
	dte	Mpsc Approved Annual Rate Increase MpscApprovedAnnualRateIncrease	175000000	USD
	dte	Mpsc Approved Return On Equity MpscApprovedReturnOnEquity	0.105	percent
	dte	Net Over Recovery Of One Year Prior And Current Year Gas Cost Recovery Expense NetOverRecoveryOfOneYearPriorAndCurrentYearGasCostRecoveryExpense	1000000	USD
	dte	Net Over Recovery Of Power Supply Cost Recovery Expense NetOverRecoveryOfPowerSupplyCostRecoveryExpense	15600000	USD
	dte	Net Over Recovery Of Two And One Years Prior Gas Cost Recovery Expense NetOverRecoveryOfTwoAndOneYearsPriorGasCostRecoveryExpense	5900000	USD
CY2011Q1	dte	Net Under Recovery Of Power Suppy Cost Recovery Expense NetUnderRecoveryOfPowerSuppyCostRecoveryExpense	52600000	USD
CY2011Q3	dte	Non Vested Stock Options NonVestedStockOptions	666486	shares
CY2011Q3	dte	Number Of Citizens Gas Customers NumberOfCitizensGasCustomers	17000	customers
	dte	Number Of Defendant Oil Power And Coal Companies In Domestic District Court On Basis Of Which Company Named NumberOfDefendantOilPowerAndCoalCompaniesInDomesticDistrictCourtOnBasisOfWhichCompanyNamed	24	people
CY2011Q3	dte	Number Of Electric Utility Customers NumberOfElectricUtilityCustomers	2100000	customers
CY2011Q3	dte	Number Of Gas Utility Customers NumberOfGasUtilityCustomers	1200000	customers
	dte	Number Of People In Country Claiming Business Activities Contributing To Global Warming Higher Temperatures And Storm Activity NumberOfPeopleInCountryClaimingBusinessActivitiesContributingToGlobalWarmingHigherTemperaturesAndStormActivity	400	people
CY2011Q3	dte	Number Of Represented Employees NumberOfRepresentedEmployees	5000	employees
	dte	Number Of Represented Employees Who Ratified New Contract NumberOfRepresentedEmployeesWhoRatifiedNewContract	400	employees
	dte	Options Exercised Shares OptionsExercisedShares	-1541690	shares
	dte	Other Comprehensive Income Unrealized Gains And Losses Net Of Tax OtherComprehensiveIncomeUnrealizedGainsAndLossesNetOfTax	0	USD
	dte	Other Comprehensive Income Unrealized Gains And Losses Net Of Tax OtherComprehensiveIncomeUnrealizedGainsAndLossesNetOfTax	1000000	USD
	dte	Overy Recovery On Refund For Self Implemented Rates OveryRecoveryOnRefundForSelfImplementedRates	3800000	USD
CY2011Q3	dte	Performance Bonds Outstanding PerformanceBondsOutstanding	14000000	USD
CY2011Q3	dte	Performance Share Awards Outstanding Shares PerformanceShareAwardsOutstandingShares	1605052	shares
CY2010Q4	dte	Performance Share Awards Outstanding Shares PerformanceShareAwardsOutstandingShares	1527253	shares
	dte	Period For Report To Mpsc On Revenues Collected Through Self Implemented Rate Increase PeriodForReportToMpscOnRevenuesCollectedThroughSelfImplementedRateIncrease	90	Days
	dte	Period Gas Utility Can Amortize Mgp Costs PeriodGasUtilityCanAmortizeMgpCosts	10	years
	dte	Period Of Coverage Of Policy For Extra Expenses PeriodOfCoverageOfPolicyForExtraExpenses	3	years
	dte	Plant And Equipment Expenditures Non Utility PlantAndEquipmentExpendituresNonUtility	61000000	USD
	dte	Plant And Equipment Expenditures Non Utility PlantAndEquipmentExpendituresNonUtility	75000000	USD
	dte	Plant And Equipment Expenditures Utility PlantAndEquipmentExpendituresUtility	968000000	USD
	dte	Plant And Equipment Expenditures Utility PlantAndEquipmentExpendituresUtility	743000000	USD
	dte	Possible Additional Capital Exepnditures For Epa Regulations PossibleAdditionalCapitalExepndituresForEpaRegulations	80000000	USD
	dte	Possible Refund Calculations For Revenue Decoupling Mechanism Maximum PossibleRefundCalculationsForRevenueDecouplingMechanismMaximum	71000000	USD
CY2011Q2	dte	Reduction Of Net Deferred Tax Assets ReductionOfNetDeferredTaxAssets	0	USD
CY2011Q2	dte	Reduction Of Net Deferred Tax Assets1 ReductionOfNetDeferredTaxAssets1	307000000	USD
CY2011Q3	dte	Renewal Of Credit Facilities RenewalOfCreditFacilities	1800000000	USD
	dte	Renewal Of Credit Facility Time Period RenewalOfCreditFacilityTimePeriod	5	years
	dte	Requested Authority To Refund Revenue Decoupling Mechanism RequestedAuthorityToRefundRevenueDecouplingMechanism	56000000	USD
CY2011Q3	dte	Requested Recovery For Revenue Decoupling Mechanism RequestedRecoveryForRevenueDecouplingMechanism	20000000	USD
CY2011Q1	dte	Requested Recovery Of Restoration Expenses RequestedRecoveryOfRestorationExpenses	19500000	USD
CY2011Q1	dte	Requesting Authority To Refund Uncollectible Expense To Customers RequestingAuthorityToRefundUncollectibleExpenseToCustomers	7000000	USD
	dte	Restricted Stock Award Activity Vested And Issued RestrictedStockAwardActivityVestedAndIssued	-339138	shares
CY2011Q1	dte	Power Supply Cost Of Power Sold PowerSupplyCostOfPowerSold	1200000000	USD
	dte	Power Supply Cost Recovery Expense Forecast For Current Year PowerSupplyCostRecoveryExpenseForecastForCurrentYear	1200000000	USD
CY2011Q2	dte	Reserve And Impairment Of Retirement Obligation ReserveAndImpairmentOfRetirementObligation	6000000	USD
	dte	Restricted Stock Award Activity Forfeitures RestrictedStockAwardActivityForfeitures	-65592	shares
	dte	Power Supply Cost Recovery Expense Forecast Next Year PowerSupplyCostRecoveryExpenseForecastNextYear	1400000000	USD
	dte	Power Supply Cost Recovery Plan Case Factor Current Year PowerSupplyCostRecoveryPlanCaseFactorCurrentYear	2.98	kWh
	dte	Power Supply Cost Recovery Plan Case Factor Next Year PowerSupplyCostRecoveryPlanCaseFactorNextYear	4.18	kWh
	dte	Power Supply Cost Recovery Under Collection One Year Prior PowerSupplyCostRecoveryUnderCollectionOneYearPrior	36000000	USD
	dte	Primary Coverage PrimaryCoverage	500000000	USD
	dte	Projected Power Supply Cost Recovery Under Recovery For Current Year ProjectedPowerSupplyCostRecoveryUnderRecoveryForCurrentYear	158000000	USD
CY2011Q1	dte	Re Proposed Regulations Minimum Period Of Compliance With Applicable Standards ReProposedRegulationsMinimumPeriodOfComplianceWithApplicableStandards	3	years
	dte	Restricted Stock Award Activity Vested And Isued Weighted Average Fair Value Per Share RestrictedStockAwardActivityVestedAndIsuedWeightedAverageFairValuePerShare	38.25
	dte	Restricted Stock Awards Activity Forfeitures Weighted Average Fair Value Per Share RestrictedStockAwardsActivityForfeituresWeightedAverageFairValuePerShare	40.84
	dte	Restricted Stock Awards Activity Shares Granted RestrictedStockAwardsActivitySharesGranted	381840	shares
CY2010Q4	dte	Restricted Stock Awards Outstanding Shares RestrictedStockAwardsOutstandingShares	757414	shares
CY2011Q3	dte	Restricted Stock Awards Outstanding Shares RestrictedStockAwardsOutstandingShares	734524	shares
CY2011Q3	dte	Revolving Credit Facilities With Syndicate Number Of Banks RevolvingCreditFacilitiesWithSyndicateNumberOfBanks	23	banks
	dte	Self Implemented Rate Increase SelfImplementedRateIncrease	107000000	USD
	dte	Share Based Compensation Arrangements Other Than Options Payout In Period ShareBasedCompensationArrangementsOtherThanOptionsPayoutInPeriod	-467688	shares
	dte	Time Period Bonds Were Remarketed For TimePeriodBondsWereRemarketedFor	5	years
	dte	To Reduce Nuclear Decommisssioning Surcharge Annually ToReduceNuclearDecommisssioningSurchargeAnnually	20000000	USD
	dte	Uncollectibe Expense Prior Year UncollectibeExpensePriorYear	7000000	USD
	dte	Uncollectible Expense Tracking Mechanism Under Collection Three Years Prior UncollectibleExpenseTrackingMechanismUnderCollectionThreeYearsPrior	24000000	USD
	dte	Under Recovery For Pension Equalization Mechanism UnderRecoveryForPensionEqualizationMechanism	7100000	USD
CY2011Q3	dte	Unrealized Losses Recognized As Regulatory Assets UnrealizedLossesRecognizedAsRegulatoryAssets	87000000	USD
CY2010Q4	dte	Unrealized Losses Recognized As Regulatory Assets UnrealizedLossesRecognizedAsRegulatoryAssets	26000000	USD
CY2011Q3	dte	Value Of Transactions Company Would Have Been Exposed To If Credit Rating Below Investment Grade ValueOfTransactionsCompanyWouldHaveBeenExposedToIfCreditRatingBelowInvestmentGrade	209000000	USD
CY2010Q4	dte	Weighted Average Grant Date Fair Value Per Share Balance WeightedAverageGrantDateFairValuePerShareBalance	37.32	USD
CY2011Q3	dte	Weighted Average Grant Date Fair Value Per Share Balance WeightedAverageGrantDateFairValuePerShareBalance	42.22
	dte	Years For Bargaining Unit Contract YearsForBargainingUnitContract	3	years
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2011
	dei	Document Period End Date DocumentPeriodEndDate	2011-09-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0000936340
CY2011Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	169250934	shares
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Registrant Name EntityRegistrantName	DTE ENERGY CO

Files In Submission

Name	View Source	Status
0000936340-11-000005-index-headers.html	Edgar Link	pending
0000936340-11-000005-index.html	Edgar Link	pending
0000936340-11-000005.txt	Edgar Link	pending
0000936340-11-000005-xbrl.zip	Edgar Link	pending
a12-48ratioofearningstofix.htm	Edgar Link	pending
a3-11amendedbylawsasamende.htm	Edgar Link	pending
dte-20110930.xml	Edgar Link	completed
dte-20110930.xsd	Edgar Link	pending
dte-20110930_cal.xml	Edgar Link	unprocessable
dte-20110930_def.xml	Edgar Link	unprocessable
dte-20110930_lab.xml	Edgar Link	unprocessable
dte-20110930_pre.xml	Edgar Link	unprocessable
dte-9302011x10q.htm	Edgar Link	pending
dte-9302011xex_3169.htm	Edgar Link	pending
dte-9302011xex_3170.htm	Edgar Link	pending
dte-9302011xex_3269.htm	Edgar Link	pending
dte-9302011xex_3270.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
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R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$DTE
DTE ENERGY CO Stock $dte

2011 Q3 Form 10-Q Financial Statement

#000093634011000005 Filed on November 04, 2011

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DTE DTE ENERGY CO Stock $dte

2011 Q3 Form 10-Q Financial Statement

#000093634011000005 Filed on November 04, 2011

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$DTE
DTE ENERGY CO Stock $dte